Alcohol injector



Feb. v19, 1929.

L. J. C. LRSEN ALCOHOL INJECTOR Filed'Sept. 28, 1927 INVENTOR v LouisJGLarJeu WITNESSE'S ATTORNEY Patented Feb. 19, 1929.

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This inventioirrelatesto analcoholinjec'- tor, and more specifically `to vIneanswher'eby alceholor analogous fluid may be forced or directed into a gas pipe to clear the` same when the gas in the pipe is frozen.

One of the great'annoyances, particularly in cold climates, is .the freezing of gas pipes,

and my invention includesthe provisionof an improved construction and arrangement ofvalve so located in communication with the gas pipe or pipes as not to interfere in any way with the flowy of gas, which will not leak and which enables the use ofy a syringe, or analogous device, to inject alcohol into the f' pipe to free the same when the pipe is frozen.

It is needless to at length set forth the present methods and diiculties in freeing frozen gas pipes as it is perfectly appa-rent'that the provision of a meansfor this fpurpose which will permit the pipe to be freed without un-` couplingany portion of the pipe system is of great advantage and produces distinctively new results.

With these and other objects in view, the invention consists ,in certain novel features of construction and combinations and ar- A rangements of parts, which will be more fully hereinafter described and pointed out in the claim.

Figure 1 is a fragmentary plan view illustrating the location and operation of my improved mechanism in connection with a gas pipe line;

Figure 2 is a viewinlongitudinal section through my improved valve and its support showing a syringe in position foroperation;

Figure 3 is a view in elevation of the structure shown inFigure 2, with the dust cap in position and the syringe removed;

Figure 4 1s an end view of the valve caslng;

Figure 5 is a view in section on the line 5-'5 of Figure 2.

1 represents a gas pipe main, which may be located in the street, and which 1s connected by a lead pipe 2 into thehouse or other building. 3 is a T-couplin g connected to the pipe 2, and 4 is a pipe extending to `the meter or into.

the building or other structure. y

Onone end ofthe T-coupling 3 a pipe section 5 is screwed and is internally threaded to receive an externally threaded coupling tube 6 on whichy an internally screw-threaded cap 7 is positioned.

8l represents the casing of my improved valve, which is located in the coupling pipe or sleeve 6 and spaced therefrom. This caslng 8 may be of general cyhndricalform, as

shown, having a reduced externally screw-A,

threaded nipple 9 at one end which projects through a screw-threaded 'opening 1() in cap 7 asclearly shown in Figure 2.

The inner end of casing 8 is closed by a perforated cover 11, and a valve 12 is located in the casing and normally engages ay beveled seat 13 in the casing. This valve 12 has a post 14 thereon. and a coil spring 15 posi- .tioned around thepost and located between t-he valve and the cover 11 exerts pressure on the valve to hold the same normally in closed position. v I A j The valve 12 has an angular stem 16 projecting into the nipple 9, and a dust cap 17 1s normally screwed onto the end of the nipple 9 to prevent the entrance of dirt' and dust in thel nipple.

The parts above described are installed as y a part of the system and provide convenient mea-ns to enable the injection of alcohol or other analogous fluid into the pipe to free the same from ice.

In connection with the apparatus above described I preferably employ a syringe 18 having a nozzle 19 thereon adapted-to be positioned in the nipple 9 and'having notches or openings 20 at its end so as to allow the escape f of alcohol from the syringe when the nozzle Y is pressed against the end of the stem 16.

Around the nozzle 19 I preferably locate a conical gasket 21, of rubber or other suitable materiaL-Which projects into the nozzle19 and prevents any possibility of leakage during the operation of the syringe.

The syringe 18 may of course be of any desired construction which will contain alcoyhol andalloW-the same to be ejected therefrom, and Ihave shown said syringe as hav-v ing a plunger 22 with a stem` 23 thereon and a. handle 24 on the outer end of the stem;

When my improved device is installed and ice formsin the pipe itis simply necessary to vfill the-syringe 18 with alcohol, then remove the dust cap 17 and position the nozzle 19 in the nipple 9. By pressing the nozzle inwardly the valve 12 will. be opened and the syringe canbe operated to inject alcohol into the pipe and fre'e the same from ice. f When the syringe is removed, the valve will automatically close and there will be no escape of` gas andthe dust cap17 can be replaced after the operation is ended. f l f lVhile I have illustrated what I believe to be a preferred embodiment of my invention, it is obvious various changes and alterations might be made in the general `form of the parts described without departing from my invention and hence do not limit myself to the precise details set Jforth but consider myself at liberty to make Such changes and alterations as fairly fallwithin the spirit and scope of the appended claim.

I claim:

As a new article oit malmfactureya closure for a gas main, including a cap having removable screw-threaded engagement with a line pipej a check valve in the cap, a casing in the cap in which the check valve operates, a screw-threaded nipple on one end of said casing, and said cap having; a screw-threaded opening; through which the nipple projects, whereby a closure cap may be screwed onto the end of said nipple. y

Signed at New York in the county O'E'New York and State of New York this 27th day of September, A. D. 1927.

LoUis J. e. LA RSEN. 

